Upright boiler



(No Model.)

P. J. MQGRATH.

UPRIGHT BOILER.

No. 567,768. Patented Sept. 15, 1896.

WITNESSES: INVEIV TUB ATF NEYJ.

STATES ATENT F F ICE UPRIGHT BOILER.

SPECIFICATION forming part of Letters Patent No. 567,768, dated September 15, 1896.

Application filed August 26, 1 8 9 5 To all whom it may concern.-

le it known that I, PATRICK JOHN Mc- GRATH, a citizen of the United States, and a resident of Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Upright Boilers,of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to steam-boilers, and particularly to that class thereof known as upright boilers; and the object thereof is to provide a boiler of this class so constructed that the interior thereof may be conveniently scraped or scaled and deposits of any kind removed from the tubes; and with this and other objects in view theinvention consists in the construction, combination, and arrangement of parts hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which Figure 1 is a view of a vertical boiler, the boiler-casin g of which is shown in section and slightly raised from its normal position; and Fig. 2, a side elevation of my improved boiler ready for use.

In the practice of my invention I provide the usual base or fire-pot A, to which is secured an angle-iron hoop or ring B, havinga rim 1), and within which is placed the furnace tube-sheet O, which constitutes one of the heads of the boiler. Secured within this sheet or head O and passing therethrough are the tubes D, which are connected with and pass through the upper tube-sheet E, which also constitutes the upper head of the boiler and is provided with an annular rim 6, and above this tube-sheet or head E is placed the smokestack F in the usual manner. The outer shell or casing G is cylindrical in form, as is usual in this class of constructions, and the lower end thereof is provided with a ring of angleiron, which is secured thereto, and the lower rim of which is adapted to rest upon the a11- nular flange or rim 1), and secured within the upper end of the shell or casing is a ring of angle-iron K, provided with an inwardly-di- Serial No. 560,498. (No model.)

rectcd flange 7c, in which are formed numerous perforations, through which pass pins or projections M, formed on or secured to the annular rim or flange E, as clearly shown in Fig. 1.

Secured to the base A, below the ring B, are plates N, having shoulders or projections O, and corresponding plates P, and are secured to the shell or casing G, provided with similar projections or extensions R, and through the projections or extensions R and O are passed bolts S, which are provided on their opposite ends with reverse or left and right screw-threads, and mounted eentrallyon each of said bolts is a nut T.

The operation will be readily understood from the foregoing description when taken in connection with the accompanying drawings. Any preferred number of plates P and N may be employed, all that is necessary in this connection being to provide such a number of said plates as are required to securely clamp and hold the shell or casing G and the part A together. hen the shell 01; casing G is placed in the position shown in Fig. 2, the pins or projections M will pass through the perforations L in the ring K, and the said shell or casing may then be secured to the base by means of the rods S, the nuts P thereon being turned so as to draw the said parts securely together. Whenever it is necessary to clean the interior of the boiler or the tubes D thereof, or to scale the same, the parts are separated or the shell or casing G raised, as

shown in Fig. 1, by removing or releasing the screw-bolts S, as will be readily understood, and, if desired, the shell or casing G may be entirely removed, and after the parts have been cleaned said shell or casing may be replaced, as shown in Fig. 2 and as hereinbefore described. It will thus be seen that I accomplish the object of my invention by means of a device which is simple in construction and operation and one which is perfectly adapted to produce the result for which it is intended.

My invention is not limited to the exact form, construction, and combination of parts shown and described, as it is evident that changes therein may be made without departing from the spirit of my invention, and I tubes or flues and held in normal position between the upper and lower annular rims of ranges by means of suitable bolts, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 15th day of August, 1895.

PATRICK JOHN MOGRATH.

Witnesses:

L. M. MULLER, M. A. KNOWLES. 

